Witness the power of soil to light up lightbulbs (click read more)
Since everyone know soil naturally contains energy conducive metals like zinc, copper and iron, and microbial fuel cells. Dutch inventer Mareike Staps has created the Soil Lamp. By using conductive plates made from copper and zinc buried within the soil the external lightbulb is able to light up. And all you have to do to maintain the energy flow is water the soil lamp like a plant Neato!
